The 5.7-liter RAM 1500 typically uses 5W-20 full-synthetic motor oil, with 5W-30 as an acceptable alternative in hot climates or under heavy-use conditions. The oil should meet Chrysler’s MS-6395 specification, and the engine’s oil capacity is about 7 quarts with a filter.
In practice, this guidance comes from the vehicle’s maintenance manuals and service bulletins, which tie the viscosity choice to climate, towing, and operating conditions. While 5W-20 is the default recommendation for most models, some years and environments allow 5W-30. Always verify against your specific model year and configuration to ensure compatibility.
Recommended oil types for the 5.7L Hemi
Below are the primary viscosity options you’ll typically see recommended for the 5.7L Hemi in RAM 1500s, along with notes on why you might choose each.
- 5W-20 synthetic motor oil (preferred default). This grade provides good fuel efficiency and cold-start protection under normal to moderate climates and driving conditions.
- 5W-30 synthetic motor oil (alternative for hot climates or heavy-duty use). In higher temperatures, towing, or frequent hard acceleration, 5W-30 can offer additional protection.
- Look for oils that meet Chrysler MS-6395 specification and API service standards (e.g., API SN/GF-5 or newer) to ensure proper protection for the 5.7L Hemi.
In summary, your best bet is 5W-20 synthetic meeting MS-6395 as the standard, with 5W-30 as a climate/usage-dependent alternative. Always read the owner’s manual for your exact year and trim, since there can be year-to-year differences.
Oil capacity and maintenance notes
Knowing the approximate capacity helps with planning oil changes and top-offs. The 5.7L Hemi RAM 1500 holds roughly 7 quarts of oil when performing an oil and filter change, with some minor variation by model year or engine revision.
- Oil capacity: about 7 quarts (6.6 L) with a filter change.
- Primary oil specification: Mopar MS-6395 (Chrysler/OEM standard) with API service ratings such as SN or newer.
- Recommended practice: use a full-synthetic oil that meets MS-6395; avoid conventional oils unless explicitly approved by the manual.
Always confirm the exact capacity and specification for your specific VIN, year, and configuration in the owner's manual or by contacting a RAM dealer or certified technician. Proper maintenance helps protect the engine and preserves warranty coverage where applicable.
Practical guidance for selecting and changing oil
When you shop for oil and plan an oil change, keep these considerations in mind to ensure compatibility and optimal performance.
- Choose a full-synthetic 5W-20 oil that meets MS-6395; 5W-30 is acceptable only if your manual permits it for your climate/conditions.
- Check the engine oil cap and the owner’s manual for the exact specification and capacity for your year/model.
- Verify the oil grade on the bottle’s label and ensure it meets API SN/SP and the MS-6395 standard.
- Use a compatible oil filter and replace it at each oil change to maintain filtration efficiency.
By following the official specifications and these practical steps, you’ll keep the 5.7L Hemi RAM 1500 running smoothly across seasons and workloads.
Summary
For the RAM 1500 with a 5.7L Hemi, the standard oil is 5W-20 synthetic that meets MS-6395, with 5W-30 as a climate- or workload-dependent alternative. Expect an oil capacity of about 7 quarts with a filter. Always verify your specific model year and configuration in the owner's manual to confirm the exact viscosity, specification, and capacity, and choose a high-quality synthetic oil to maintain engine performance and longevity.
Can I run 5W-30 in my 5.7 HEMI?
Q: Can I use 5W-30 oil instead of 5W-20 in my 5.7 HEMI? A: Only if your owner's manual specifically allows it (typically RAM 2500/3500 heavy-duty applications) or if 5W-20 is temporarily unavailable. Using heavier oil than specified may affect MDS system performance and fuel economy.
How much oil does a RAM 1500 5.7 V8 take?
Approximately 7 quarts
5.7L HEMI® V8 – Approximately 7 quarts with filter.
Is 5W-20 or 5W-30 better for high mileage?
Key Differences: 5W30 vs 5W20
5W30 offers better high-temperature protection. It's great for towing, highway driving, or older engines, especially for drivers in Frandor and Lansing who use their vehicles for more than just errands. 5W20 is thinner and generally suited for newer engines that prioritize efficiency.
What rams to stay away from?
Buyers commonly choose to avoid 2013–2015 and 2018 Ram 1500 models unless maintenance records are excellent, because these years more frequently show repeat transmission and electrical complaints than other model years.